gpnf-ignore-first-n-entries-in-count.js

/**
 * Gravity Perks // GP Nested Forms // Ignore the first `n` child entries with `:count` merge tag modifier
 * https://gravitywiz.com/documentation/gravity-forms-nested-forms
 *
 * Also works with `:total` merge tag modifier
 *
 * Instructions:
 *
 * 1. Install this snippet with our free Custom JavaScript plugin.
 *    https://gravitywiz.com/gravity-forms-custom-javascript/
 * 2. Install https://github.com/gravitywiz/snippet-library/blob/master/experimental/gfjs-early-init-scripts.php
 * 3. Install accompanying `gpnf-ignore-first-n-entries-in-count.php` PHP snippet: https://gist.github.com/matty0501/651b15e30f2d9ddfc2f5e41319c7c1b3
 * 4. Customize form ID, field ID(s), and value check
 */
window.gform.addFilter( 'gpnf_calc_entries', function(entries, match, fieldId, formId, self, formulaField) {
	// Only run this for Nested Form Field ID 1 in form ID 123.
	if (fieldId !== 1 || formId != 123) {
	}

	// Only change what entries are used for the calculation done in parent field ID 3
	if (formulaField.field_id != 3) {
		return entries;
	}

	// Remove the first `n` entries, and return the modified array. Replace 2 with the number of entries you want to remove.
	var filteredEntries = entries.slice( 2 );

	return filteredEntries;
});